The importance of chironomid (Diptera, Chironomidae) in benthic communities of the Tchusovaya river's inflow streams

Chironomid complexes and quantity presence of chironomid in the Tchusovaya River's inflow streams is being discussed. 82 species have been registered for 4 years. The species diversity of chironomid is dependent directly on river length. The average number and biomass of larvae are significantly different in various streams.